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G4 EA H1N1, also known as the G4 swine flu virus (G4) is a swine influenza virus strain discovered in China. [119] The virus is a variant genotype 4 (G4) Eurasian avian-like (EA) H1N1 virus that mainly affects pigs, but there is some evidence of it infecting people. [ 119 ]
Swine influenza (also known as swine flu or pig flu) is a respiratory disease that occurs in pigs that is caused by the Influenza A virus. Influenza viruses that are normally found in swine are known as swine influenza viruses (SIVs). The three main subtypes of SIV that circulate globally are A(H1N1), A(H1N2), and A(H3N2).
The pandemic H1N1/09 virus is a swine origin influenza A virus subtype H1N1 strain that was responsible for the 2009 swine flu pandemic. This strain is often called swine flu by the public media due to the prevailing belief that it originated in pigs. The virus is believed to have originated around September 2008 in central Mexico.
The UK’s first human case of swine flu strain H1N2 has been detected, the UK Health Security Agency (UKHSA) has announced.. The strain of influenza, called H1N2, is similar to flu viruses ...
Pigs usually recover within 3–7 days after symptoms appear. Prevention and control measures include inactivated vaccines and culling infected herds. Influenza A virus subtypes H1N1, H1N2, and H3N2 are usually responsible for swine flu. [92] Some influenza A viruses can be transmitted via aerosols from pigs to humans and vice versa. [1]
Influenza A virus subtype H3N2 (A/H3N2) is a subtype of influenza A virus (IAV). Some human-adapted strains of A/H3N2 are endemic in humans and are one cause of seasonal influenza (flu). [1] Other strains of H1N1 are endemic in pigs (swine influenza) and in birds (avian influenza). [2]
The influenza viruses are members of the family Orthomyxoviridae. [1] Influenza viruses A, B, C, and D represent the four antigenic types of influenza viruses. [4] Of the four antigenic types, influenza A virus is the most severe, influenza B virus is less severe but can still cause outbreaks, and influenza C virus is usually only associated with minor symptoms. [5]
Pigs, which can catch both bird and human flu viruses, not to mention swine flu, pose a particular threat. “We’re always concerned about pigs getting an avian influenza,” Davis says.